摘要：A Neutron Time-of-Flight(NTOF) spectrometer, based at the Heavy Ion Research Facility in Lanzhou(HIRFL) was developed for studies of neutron production of proton induced spallation reactions related to the ADS project. After the presentation of comparisons between calculated spallation neutron production doubledifferential cross sections and the available experimental data, a detailed description of the NTOF spectrometer is given. Test beam results show that the spectrometer works well and data analysis procedures are *** comparisons of the test beam neutron spectra with those of GEANT4 simulations are presented.

摘要：In order to develop a generic framework capable of designing novel amorphous alloys with selected target properties,a predictor−corrector inverse design scheme(PCIDS)consisting of a predictor module and a corrector module was presented.A high-precision forward prediction model based on deep neural networks was developed to implement these two *** utmost importance,domain knowledge-guided inverse design networks(DKIDNs)and regular inverse design networks(RIDNs)were also *** forward prediction model possesses a coefficient of determination(R^(2))of 0.990 for the shear modulus and 0.986 for the bulk modulus on the testing ***,the DKIDNs model exhibits superior performance compared to the RIDNs *** is finally demonstrated that PCIDS can efficiently predict amorphous alloy compositions with the required target properties.

摘要：西夏版画中新发现一幅专门表现护法神“般若揭谛”的版画图像,图文互证敦煌唐代写本《羯谛真言》“揭谛神斩蛇救春娘”故事为此版画蓝本。护法神在西夏版画中有专门的绘制与表现,重点突出官方对此类图像的崇拜和偏好。就图像观念而言,这些艺术图像主要表现护法神守护佛法、降服邪魔的大无畏与勇猛精神,伴随佛教艺术的传播在不同区域和不同媒材之间相互影响,是10—13世纪护法神信仰的集中体现和传统延续。

摘要：Biohydrometallurgy 是生物工学和冶金学的意外联合的后代。从某极端 biotopes 的特定的性质，在微生物引起的新陈代谢和矿物质之间的相互作用的活跃原则被提取了被用作有效冶金过程。许多有利工业操作基于这些 bioprocesses 一直在跑例如恢复铜，黄金，铀或钴，许多另外的应用程序被设计了。欧洲在这个区域在是相当活跃的过去，但是当前领导在南非，美洲和澳大利亚。BioMinE (在欧洲的忍受金属的材料的生物工学) 是与欧洲 Commision 的支持发射的一个大综合工程。它针对刺激在在这个技术领域里开发新概念的最相关的大学，研究和工业组织之间的协同作用以后允许矿物质资源的更好的利用。当他们识别了需要从今天并且明天的资源为金属抽取发现新过程，欧洲非铁的金属采矿工业开始了并且发展 BioMinE 工程。

摘要：The ± 800 kV ultra high voltage direct current (UHVDC) transmission system is an extraordinary challenge to system design and equipment manufacture. China Southern Power Grid Company (CSG) organized research and design for the construction of Yunnan-Guangdong ± 800 kV UHVDC project (YG UHVDC project), and got large technical breakthroughs and advanced technologies for ± 800 kV UHVDC transmission systems. These advanced technologies include power system stability, main electrical wiring, overvoltage and insulation coordination, external insulation, electromagnetic environment, control and protection, and arrangement of the main equipments. Meanwhile,CSG led the researches on specification of main equipments,such as converter valve,converter transformer, dry-type smooth reactor and others involved in the whole process management of equipment supervisions. The YG UHVDC project was put into commercial operation in 2010 as the first pilot ± 800 kV UHVDC project in the world. The whole system operated in a stable and smooth manner,and the UHVDC equipment and control systems passed the test under the practical operation in CSG bulk power system, which shows that the design and research objectives were achieved.

摘要：Nanomaterials have garnered recognition for their notable surface effects and demonstration of superior mechanical *** studies on the surface effects of nanomaterials,employing the finite element method,often relied on simplified twodimensional models due to theoretical ***,these simplified models inadequately represent the mechanical properties of nanomaterials and fail to capture the substantial impact of surface effects,particularly the curvature dependence of *** study applies the principle of minimum energy and leverages the Steigmann-Ogden surface theory of nanomaterials to formulate a novel finite element surface element that comprehensively accounts for surface *** conducted an analysis of the stress distribution and deformation characteristics of four typical 2D and 3D nanomaterial *** accuracy of the developed surface element and finite element calculation method was verified through comparison with established *** resulting finite element model provides a robust and compelling scientific approach for accurately predicting the mechanical performance of nanomaterials.

摘要：The Duvernay project in Canada was taken as an example to summarize the advanced technology and engineering management model of shale oil and gas development in North *** suggestions were put forward to accelerate the commercial development of domestic continental shale oil and *** advanced technologies,valuable knowledge and rich experience were introduced,including the evaluation of geological target area of the project,rapid long horizontal drilling and completion,high-intensity fracturing,and well spacing *** particular,the concept and connotation of the full-life cycle management of North American unconventional resource projects were *** emphasis on early evaluation and risk management,and a highly competitive market environment have played an important role in promoting technological innovation and management *** addition,the low-cost sharing system of industry-wide knowledge and experience and the management mode were *** management approaches are of great significance for reference in accelerating the exploration and development of unconventional resources in *** possesses abundant shale oil and gas resources,which are an important replacement to guarantee the national oil and gas energy ***,due to the late start and special geological characteristics and engineering difficulties in China,there is a large gap in technology level and management mode compared with North *** to the advanced experience and enlightenment of the shale oil and gas development in North America,a preliminary proposal to accelerate the development of shale oil and gas in China was made.

摘要：Fast electron-hole recombination issues during titanium dioxide(TiO_(2))photocatalysis limit its application in preventing bacterial infection during bone defect *** this study,TiO_(2)@reduced graphene oxide(rGO)composites were synthesized using a hydrothermal method in which rGO,which possesses very high electrical conductivity,promotes the separation of photoelectron-hole pairs of TiO_(2),thus improving the efficiency of photocatalytic production of reactive oxygen species(ROS).Subsequently,TiO_(2)@rGO composites were introduced into poly-L-lactic acid(PLLA)to prepare bone scaffolds with photocatalytic antibacterial function via selective laser *** results showed that TiO_(2)grew on the surface of rGO and formed a covalent bond connection(Ti-O-C)with rGO.A decreased electrochemical impedance of TiO_(2)@rGO composites was observed,and the transient photocurrent intensity increased from 0.05 to 0.5μA/cm^(2).Analysis of electron spin resonance found that the photocatalytic products of TiO_(2)were·OH and·O^(2-),two kinds of ROS capable of killing bacteria via disrupting the structure of the bacterial membrane in *** experiments showed that the PLLA/TiO_(2)@rGO scaffolds had good antibacterial properties against Escherichia coli and Staphylococcus ***,we report that these scaffolds exhibited both enhanced mechanical properties due to the addition of TiO_(2)@rGO as a reinforcement material and good biocompatibility during cell proliferation.

摘要：This paper introduces the PKPM-BIM construction management platform and its applications in the construction security management. The PKPM-BIM platform is an integrated management system mainly developed for the contractors to implement the BIM-aided construction management. Application of BIM technology would bring many beneficial changes to the security management in construction.

摘要：Homogeneous redox mediation is efficient in alleviating the shuttling effect and slow redox kinetics of lithium polysulfides in lithium-sulfur ***,their perfect performance is not fulfilled owning to the fact that the multi-step transformation of lithium polysulfides requests the multifunctional active positions for the tandem *** on the redox comediation principles,a promoter of mixing organodiselenide and organoditelluride(mixed-Se/Te)was raised to induce tandem catalysis and boost the effective electrochemical conversion of lithium *** specifically,diphenyl diselenide facilitated the liquid-liquid and solid-liquid transformation between lithium polysulfides and sulfur,while diphenyl ditelluride improved the solid-liquid transformation concerning lithium sulfide ***,even under high sulfur loading of 6.5 mg cm^(−2) and low electrolyte/sulfur ratio of 5.88μL mg^(−1),the 10 mM low concentration mixed-Se/Te promoter offered a high discharge capacity of 6.6 mAh cm^(−2) and high rate performance of 4.1 mAh cm^(−2) at 0.5 ***,the assembled 1.5 Ah-level lithium-sulfur pouch cells provide an energy density of 332 Wh kg^(−1) at 0.05 C and good cycling *** research demonstrates the applicability of propelling continuous sulfur conversion reactions with detached active positions and is anticipated to stimulate deep molecular design of kinetic promoter to targeted energy-associated redox reactions.